Close encounters with polar bears in the frozen Alaskan wilderness

One of the greatest challenges to their survival is a continuing reduction of their ice habitat. "I travelled with a local Inupiat guide, working from a boat called a skiff," said Steven. "This year showed some of the largest concentrations of polar bears along the coast of the Beaufort Sea, most of them being mothers with cubs...Picture: Steven Kazlowski / Barcroft Media